def test9(self):
print("Testing custom printing strategy")
mass = 2.0 | 0.5 * units.MSun
acc = (0.0098 | nbody_system.length) * (1 | units.Myr**
-2).as_quantity_in(units.s**-2)
position = [0.1, 0.2, 0.3] | nbody_system.length
power = 10 | units.W
temperature = 5000 | units.K
pi = 3.14 | units.none
converter = nbody_system.nbody_to_si(1.0 | units.kg, 1.0 | units.kpc)
set_printing_strategy("custom",
nbody_converter=converter,
preferred_units=[
units.amu, units.AU, units.minute,
units.milli(units.K), units.erg
],
precision=3,
prefix="(> ",
separator=" <|> ",
suffix=" <)")
self.assertEqual(str(mass), "(> 1.20e+57 <|> amu <)")
self.assertEqual(str(acc), "(> 7.31e-18 <|> AU * min**-2 <)")
self.assertEqual(str(position),
"(> [2.06e+07, 4.13e+07, 6.19e+07] <|> AU <)")
self.assertEqual(str(power), "(> 6.00e+09 <|> erg / min <)")
self.assertEqual(str(constants.G),
"(> 1.19e-67 <|> AU**3 * amu**-1 * min**-2 <)")
self.assertEqual(str(constants.kB), "(> 1.38e-19 <|> erg * mK**-1 <)")
self.assertEqual(str(temperature), "(> 5.00e+06 <|> mK <)")
self.assertEqual(str(pi), "(> 3.14 <|> none <)")
set_printing_strategy("default")
def test8(self):
print("Testing SI printing strategy")
mass = 2.0 | 0.5 * units.MSun
acc = 0.0098 | nbody_system.length / units.Myr**2
position = [0.1, 0.2, 0.3] | nbody_system.length
energy = 1e8 | units.erg
temperature = 5000 | units.milli(units.K)
pi = 3.14 | units.none
converter = nbody_system.nbody_to_si(1.0 | units.kg, 1.0 | units.kpc)
set_printing_strategy("SI", nbody_converter=converter)
self.assertEqual(str(mass), "1.98892e+30 kg")
self.assertEqual(str(acc), "3.03659755643e-10 m * s**-2")
self.assertEqual(
str(position),
"[3.08567758128e+18, 6.17135516256e+18, 9.25703274384e+18] m")
self.assertEqual(str(energy), "10.0 kg * m**2 * s**-2")
self.assertEqual(str(constants.G), "6.67428e-11 m**3 * kg**-1 * s**-2")
self.assertEqual(str(temperature), "5.0 K")
self.assertEqual(str(pi), "3.14 none")
set_printing_strategy("SI",
nbody_converter=converter,
print_units=False)
self.assertEqual(str(mass), "1.98892e+30")
self.assertEqual(str(acc), "3.03659755643e-10")
self.assertEqual(
str(position),
"[3.08567758128e+18, 6.17135516256e+18, 9.25703274384e+18]")
self.assertEqual(str(energy), "10.0")
self.assertEqual(str(constants.G), "6.67428e-11")
self.assertEqual(str(temperature), "5.0")
self.assertEqual(str(pi), "3.14")
set_printing_strategy("default")
def test8(self):
print "Testing SI printing strategy"
mass = 2.0 | 0.5 * units.MSun
acc = 0.0098 | nbody_system.length / units.Myr**2
position = [0.1, 0.2, 0.3] | nbody_system.length
energy = 1e8 | units.erg
temperature = 5000 | units.milli(units.K)
pi = 3.14 | units.none
converter = nbody_system.nbody_to_si(1.0 | units.kg, 1.0 | units.kpc)
set_printing_strategy("SI", nbody_converter = converter)
self.assertEqual(str(mass), "1.98892e+30 kg")
self.assertEqual(str(acc), "3.03659755643e-10 m * s**-2")
self.assertEqual(str(position), "[3.08567758128e+18, 6.17135516256e+18, 9.25703274384e+18] m")
self.assertEqual(str(energy), "10.0 kg * m**2 * s**-2")
self.assertEqual(str(constants.G), "6.67428e-11 m**3 * kg**-1 * s**-2")
self.assertEqual(str(temperature), "5.0 K")
self.assertEqual(str(pi), "3.14 none")
set_printing_strategy("SI", nbody_converter = converter, print_units = False)
self.assertEqual(str(mass), "1.98892e+30")
self.assertEqual(str(acc), "3.03659755643e-10")
self.assertEqual(str(position), "[3.08567758128e+18, 6.17135516256e+18, 9.25703274384e+18]")
self.assertEqual(str(energy), "10.0")
self.assertEqual(str(constants.G), "6.67428e-11")
self.assertEqual(str(temperature), "5.0")
self.assertEqual(str(pi), "3.14")
set_printing_strategy("default")
def test9(self):
print "Testing custom printing strategy"
mass = 2.0 | 0.5 * units.MSun
acc = (0.0098 | nbody_system.length) * (1 | units.Myr**-2).as_quantity_in(units.s**-2)
position = [0.1, 0.2, 0.3] | nbody_system.length
power = 10 | units.W
temperature = 5000 | units.K
pi = 3.14 | units.none
converter = nbody_system.nbody_to_si(1.0 | units.kg, 1.0 | units.kpc)
set_printing_strategy("custom", nbody_converter = converter, preferred_units =
[units.amu, units.AU, units.minute, units.milli(units.K), units.erg], precision = 3,
prefix = "(> ", separator = " <|> ", suffix = " <)")
self.assertEqual(str(mass), "(> 1.20e+57 <|> amu <)")
self.assertEqual(str(acc), "(> 7.31e-18 <|> AU * min**-2 <)")
self.assertEqual(str(position), "(> [2.06e+07, 4.13e+07, 6.19e+07] <|> AU <)")
self.assertEqual(str(power), "(> 6.00e+09 <|> erg / min <)")
self.assertEqual(str(constants.G), "(> 1.19e-67 <|> AU**3 * amu**-1 * min**-2 <)")
self.assertEqual(str(constants.kB), "(> 1.38e-19 <|> erg * mK**-1 <)")
self.assertEqual(str(temperature), "(> 5.00e+06 <|> mK <)")
self.assertEqual(str(pi), "(> 3.14 <|> none <)")
set_printing_strategy("default")